# compare-gpt-vs-claude-vs-gemini (GPT vs Claude vs Gemini Comparison)

This example compares OpenAI's GPT-5.4, Anthropic's Claude Sonnet 5, and Google's Gemini 3.1 Pro Preview on riddle-solving tasks with cost, latency, and quality assertions.

You can run this example with:

```bash
npx promptfoo@latest init --example compare-gpt-vs-claude-vs-gemini
cd compare-gpt-vs-claude-vs-gemini
```

See the [guide](https://www.promptfoo.dev/docs/guides/gpt-vs-claude-vs-gemini/) for more details.

## Setup

Set the required environment variables:

```sh
export OPENAI_API_KEY=your-openai-key
export ANTHROPIC_API_KEY=your-anthropic-key
export GOOGLE_API_KEY=your-google-key
```

## Run

```sh
npx promptfoo@latest eval
```

## View

```sh
npx promptfoo@latest view
```